This phase rewrites outer selects
E.n_<outer> which were introduced by
inlining to outer paths.
A name given to the
Phase that can be used to debug the compiler. For
instance, it is possible to print trees after a given phase using:
$ ./bin/dotc -Xprint:<phaseNameHere> sourceFile.scala
List of names of phases that should have finished their processing of all compilation units before this phase starts